WO2011142601A9 - Procédé pour réaliser un entrelacement de canaux dans un système de communication sans fil à antennes multiples, et appareil associé - Google Patents

Procédé pour réaliser un entrelacement de canaux dans un système de communication sans fil à antennes multiples, et appareil associé Download PDF

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Publication number
WO2011142601A9
WO2011142601A9 PCT/KR2011/003504 KR2011003504W WO2011142601A9 WO 2011142601 A9 WO2011142601 A9 WO 2011142601A9 KR 2011003504 W KR2011003504 W KR 2011003504W WO 2011142601 A9 WO2011142601 A9 WO 2011142601A9
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Prior art keywords
information
interleaver
vector sequence
ack
input vector
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PCT/KR2011/003504
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English (en)
Korean (ko)
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WO2011142601A2 (fr
WO2011142601A3 (fr
Inventor
장지웅
이문일
이현우
정재훈
한승희
고현수
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엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to US13/697,312 priority Critical patent/US8897247B2/en
Priority to EP11780818.8A priority patent/EP2571178B1/fr
Priority to CN201180023085.XA priority patent/CN102884730B/zh
Priority to MX2012013067A priority patent/MX2012013067A/es
Priority to KR1020127027295A priority patent/KR101356532B1/ko
Publication of WO2011142601A2 publication Critical patent/WO2011142601A2/fr
Publication of WO2011142601A3 publication Critical patent/WO2011142601A3/fr
Publication of WO2011142601A9 publication Critical patent/WO2011142601A9/fr
Priority to US14/523,568 priority patent/US9065622B2/en
Priority to US14/717,873 priority patent/US9325481B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/65—Purpose and implementation aspects
    • H03M13/6522—Intended application, e.g. transmission or communication standard
    • H03M13/6525—3GPP LTE including E-UTRA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072—Error control for data other than payload data, e.g. control data
    • H04L1/0073—Special arrangements for feedback channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0079—Formats for control data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H—ELECTRICITY
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/09—Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2957—Turbo codes and decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2957—Turbo codes and decoding
    • H03M13/296—Particular turbo code structure
    • H03M13/2963—Turbo-block codes, i.e. turbo codes based on block codes, e.g. turbo decoding of product codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63—Joint error correction and other techniques
    • H03M13/635—Error control coding in combination with rate matching
    • H03M13/6356—Error control coding in combination with rate matching by repetition or insertion of dummy data, i.e. rate reduction
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63—Joint error correction and other techniques
    • H03M13/635—Error control coding in combination with rate matching
    • H03M13/6362—Error control coding in combination with rate matching by puncturing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H04L1/0031—Multiple signaling transmission

Definitions

  • the present invention relates to a wireless communication system. Specifically, the present invention relates to a method and apparatus for performing channel interleaving in a multi-antenna wireless communication system.
  • a user equipment may receive information from a base station through downlink, and the user equipment may also transmit information through uplink.
  • Information transmitted or received by the user device includes data and various control information, and various physical channels exist according to the type and purpose of the information transmitted or received by the user device.
  • FIG. 1 is a diagram for explaining physical channels used in a 3rd generation partnership project (3GPP) LTECLong Term Evolution (3GPP) system, which is an example of a mobile communication system, and a general signal transmission method using the same.
  • 3GPP 3rd generation partnership project
  • 3GPP LTECLong Term Evolution
  • the user equipment that is powered on again or enters a new cell while the power is turned off performs an initial cell search operation such as synchronizing with the base station in step Sl () l.
  • the user equipment can determine from the base station a primary synchronization channel (P—SCH) and a secondary synchronization channel (S-SCH). Receives a synchronization channel) to synchronize with the base station and obtain information such as a cell ID. Thereafter, the user equipment may receive a physical broadcast channel from the base station to obtain broadcast information in a cell. On the other hand, the user equipment may receive a downlink reference signal (DL RS) in the initial cell discovery step to check the downlink channel state.
  • P—SCH primary synchronization channel
  • S-SCH secondary synchronization channel
  • the user equipment After the initial cell search, the user equipment receives a physical downlink control channel (PDCCH) and a physical downlink control channel (PDSCH) according to the physical downlink control channel information in step S102. More specific system information can be obtained.
  • PDCCH physical downlink control channel
  • PDSCH physical downlink control channel
  • the user equipment that has not completed the connection with the base station may perform a random access procedure such as step S103 to step S106 thereafter to complete the connection to the base station.
  • the user equipment transmits a feature sequence as a preamble through a physical random access channel (PRACH) (S103), through a physical downlink control channel and a corresponding physical downlink shared channel.
  • PRACH physical random access channel
  • the answer message for the random access may be received (S104).
  • layer collision resolution such as transmission of additional physical random access channel (S105) and physical downlink control channel and reception of physical downlink shared channel (S106).
  • the Contention Resolution Procedure can be performed.
  • the user equipment which has performed the above-described procedure is then subjected to a physical downlink control channel / physical downlink shared channel (S107) and a physical uplink shared channel (PUSCH) as a general uplink / downlink signal transmission procedure.
  • S107 physical downlink control channel
  • PUSCH physical uplink shared channel
  • PHY Physical Uplink Control Channel
  • PUCCH Physical Uplink Control Channel
  • FIG. 2 is a diagram illustrating a signal processing procedure for transmitting an uplink signal by a user equipment.
  • the scrambling modules 210 of the user device may scramble the transmission signal using the user device specific scrambling signal.
  • the scrambled signal is input to the modulation mapper 220 and is a complex symbol (BPSK), QPSKC Quadrature Phase Shift Keying (BPSK), or Quadrature Amplitude Modulation (16QAM) method according to the type and / or channel state of the transmitted signal. complex symbol).
  • the modulated complex symbol is processed by the transform precoder 230, and then input to the resource element mapper 240, where the resource element mapper 240 transmits the complex symbol to the time-frequency resource element to be used for actual transmission. Can be mapped to
  • the signal thus processed may be transmitted to the base station through the antenna via the SC-FDMA signal generator 250.
  • FIG. 3 is a diagram illustrating a signal processing procedure for transmitting a downlink signal by a base station.
  • the base station is one or more codewords (Code) in downlink Word) can be sent.
  • codewords may each be treated as a complex symbol through the scrambling modes 301 and the modulation mapper 302 as in the uplink of FIG. 2, after which the complex symbols are plural by the layer mapper 303.
  • Each layer is multiplied with a predetermined precoding matrix selected by the precoding module 304 according to the channel state, and assigned to each transmit antenna.
  • the transmission signal for each antenna processed as described above is mapped to a time-frequency resource element to be used for transmission by the resource element mapper 305, and then each antenna is passed through a 0 rthogonal frequency division multiple access (0FDM) signal generator 306. Can be transmitted through.
  • FDM 0 rthogonal frequency division multiple access
  • FIG. 4 is a diagram for describing an SC-FDMA scheme for uplink signal transmission and a 0FDMA scheme for downlink signal transmission in a mobile communication system.
  • Both the user equipment for uplink signal transmission and the base station for downlink signal transmission include a serial-to-parallel converter (401), a subcarrier mapper (403), an M-point IDFT module (404), and a CP ( Cyclic Prefix) is the same in that it includes additional mods 406.
  • the user equipment for transmitting signals in the SC-FDMA method further includes a parallel-to-serial converter (405) and an N-point DFT module (402), and an N-point DFT module (402). ) Offsets the IDFT processing influence of the M-point IDFT modes 404 to some degree so that the transmission signal has a single carrier property.
  • FIG. 5 is a diagram illustrating a signal mapping method in a frequency domain for satisfying a single carrier characteristic in the frequency domain.
  • (a) shows a localized mapping method and (b) shows a distributed mapping method.
  • 3GPP LTE system defines a local mapping method.
  • Clustered SC-FDMA divides DFT process output samples into sub-groups in the subcarrier mapping process sequentially between the DFT process and the IFFT process, separated from each other by subgroups at the IFFT sample input.
  • the method may be configured to map to a subcarrier region, and may include a filtering process and a cyclic extension process in some cases.
  • the subgroup may be referred to as a cluster, and cyclic extension means a delay spread of a channel between successive symbols to prevent intersymbol interference (ISI) while each symbol of a subcarrier is transmitted through a multipath channel. This means inserting a longer guard interval.
  • ISI intersymbol interference
  • the present invention provides a method and apparatus for performing channel interleaving in a multi-antenna wireless communication system.
  • a method of performing channel interleaving by a terminal includes channel quality indicator (CQI) information and coded data information, respectively, configured by vector of a predetermined bit unit.
  • CQI channel quality indicator
  • the coded rank indicator (RI) information and ACK / NACK (Acknowledgement / Negative ACK) information are each repeated by the number of transport layers ( ⁇ ⁇ :), so that the second interleaver input vector sequence and the third in the predetermined bit unit are repeated.
  • Generating an interleaver input vector sequence Mapping each of the first interleaver input vector sequence, the second interleaver input vector sequence, and the first interleaver input vector sequence to an interleaver matrix; And reading the interleaver matrix in column units to generate an output vector sequence, wherein the predetermined bit unit is defined by a product of a modulation order () and the number of transmission layers ( ⁇ ). It features.
  • generating the first interleaver input vector sequence includes:
  • a CK RI third interleaver input vector is the RI information of the Q p m bit size ⁇ )
  • the generating of the second interleaver input vector sequence and the third interleaver input vector sequence ( ⁇ ⁇ may include generating the RI information having a bit size.
  • the mapping to the interleaver matrix may include inputting the second interleaver. Mapping a vector sequence from a maximum index row of the interleaver matrix to a column index for RI information; Mapping the first interleaver input vector sequence in a time-first manner from the smallest index row of the interleaver matrix, except for the entry to which the second interleaver input vector sequence is mapped; And perforating the third interleaver input vector sequence, the entry to which the first interleaver input vector sequence is mapped, and mapping from the maximum index row of the interleaver matrix to the column index for ACK / NACK information. do.
  • Each entry of the interleaver matrix is
  • the terminal device in a multi-antenna wireless communication system a multi-antenna for transmitting and receiving a signal with a base station; And a processor for processing the signal, wherein the processor comprises a first interleaver input vector sequencer configured of a vector of predetermined bit units for each of channel quality indicator (CQI) information and encoded data information. And repeating each of the encoded Tank Indicator (RI) information and ACK / NACK (Acknowledgement / Negative ACK) information by the number of transport layers (N), to thereby generate a second interleaver input vector sequence in the predetermined bit unit.
  • CQI channel quality indicator
  • a vector sequence is generated by reading the interleaver matrix in column units, and the preset bit. The above order of modulation (0) and the transport layer Number (N).
  • the processor the CQI information of the Q C bit size And the data information of G bit size
  • ACK RI third interleaver input vector is (Etsu, the RI information of Q P, M-bit size) and
  • the ACK / NACK information is characterized in that each connection is repeated repeatedly.
  • the processor is the RI information of Q P M bit size) and the
  • the first interleaver input vector sequence is mapped from the largest index row to a column index for RI information, and the first interleaver input vector sequence is a time-first manner from the minimum index row of the interleaver matrix except for the entry to which the second interleaver input vector sequence is mapped.
  • the third interleaver input vector sequencer is mapped to the first interleaver input vector sequence, and the first interleaver input vector sequence is mapped from the maximum index row of the interleaver matrix to the column index for ACK / NACK information.
  • Each entry of the interleaver matrix is a vector ⁇ of N L ' Q P m bit size.
  • the terminal In a multi-antenna wireless communication system, the terminal... Can effectively perform multiplexing of data and control information to perform channel interleaving according to the present invention.
  • FIG. 1 is a diagram for describing physical channels used in an 3GPP LTE system, which is an example of a mobile communication system, and a general signal transmission method using the same.
  • FIG. 2 illustrates a signal processing procedure for transmitting an uplink signal by a user equipment. It is a figure for demonstrating.
  • 3 is a diagram for describing a signal processing procedure for transmitting a downlink signal by a base station.
  • FIG. 4 is a diagram for describing an SC-FDMA scheme for uplink signal transmission and a 0FDMA scheme for downlink signal transmission in a mobile communication system.
  • FIG. 5 is a diagram illustrating a signal mapping method in a frequency domain for satisfying a single carrier characteristic in the frequency domain.
  • FIG. 6 is a diagram illustrating a signal processing procedure in which DFT process output samples are mapped to a single carrier in a cluster SC-FDMA according to an embodiment of the present invention.
  • FIG. 7 and 8 are diagrams illustrating a signal processing procedure in which DFT process output samples are mapped to multi-carriers in cluster SC-FDMA according to an embodiment of the present invention.
  • FIG. 9 is a diagram illustrating a signal processing procedure in a segment SC-FDMA system according to an embodiment of the present invention.
  • FIG. 10 is a diagram for describing a signal processing process for transmitting a reference signal (hereinafter, referred to as RS) in uplink.
  • RS reference signal
  • FIG. 11 is a diagram illustrating a structure of a subframe for transmitting an RS in the case of a normal CP.
  • FIG. 12 illustrates RS for transmitting an RS in case of extended CP. It is a figure which shows the structure of a subframe.
  • FIG. 13 is a block diagram illustrating a process of a transport channel for an uplink shared channel.
  • 14 is a diagram illustrating a mapping method of physical resources for uplink data and control channel transmission.
  • 15 is a flowchart illustrating a method of efficiently multiplexing data and control channels on an uplink shared channel.
  • 16 is a block diagram illustrating a method of generating transmission signals of data and control channels.
  • 17 is a diagram for explaining a codeword to layer mapping method.
  • FIG. 18 is a diagram illustrating a block diagram of a communication device according to an embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a signal processing procedure in which DFT process output samples are mapped to a single carrier in cluster SC-FDMA according to an embodiment of the present invention.
  • 7 and 8 are present examples.
  • cluster SC-FDMA according to an embodiment of the present invention, a diagram illustrating a signal processing procedure in which DFT process output samples are mapped to multi-carriers.
  • FIG. 6 illustrates an example of applying cluster SC—FDMA in an intra-carrier
  • FIGS. 7 and 8 correspond to an example of applying cluster SC-FDMA in an inter-carrier
  • FIG. 7 illustrates a case of generating a signal through a single IFFT block when subcarrier spacing between adjacent component carriers is aligned in a case where contiguous component carriers are allocated in the frequency domain
  • FIG. 8 illustrates a case in which signals are generated through a plurality of IFFT blocks because component carriers are not adjacent in a situation in which component carriers are allocated non-contiguous in the frequency domain.
  • Segment SC-FDMA has a one-to-one relationship between the DFT and the IFFT as the same number of IFFTs as the number of DFTs is applied. It is sometimes referred to as NxSC-FDMA or NxDFT-s-OFDMA. In the present invention, the expression encompassing this This is called segmented SC-FDMA.
  • 9 is a diagram illustrating a signal processing procedure in a segment SC-FDMA system according to an embodiment of the present invention. As shown in FIG. 9, the segment SC-FDMA performs a DFT process on a group basis by grouping all time-domain modulation symbols into N (N is an integer greater than 1) groups to alleviate a single carrier characteristic condition. It is characterized by.
  • FIG. 10 is a diagram for describing a signal processing procedure for transmitting a reference signal (hereinafter, referred to as RS) in uplink.
  • RS reference signal
  • data is generated in the time domain and transmitted through the IFFT after frequency mapping through the DFT precoder, while RS omits the process through the DFT precoder, and the frequency
  • S11 the localization mapping
  • S13 the IFFT
  • CP cyclic prefix
  • FIG. 11 is a diagram illustrating a subframe arbitrary structure for transmitting an RS in the case of a normal CP
  • FIG. 12 is a diagram of a subframe for transmitting an RS in the case of an extended CP. It is a figure which shows a structure.
  • RS is transmitted through 4th and 11th OFDM symbols
  • RS is transmitted through 3rd and 9th OFDM symbols.
  • FIG. 13 is a block diagram illustrating a processing of a transport channel for an uplink shared channel.
  • data information multiplexed with control information is After attaching a Cyclic Redundancy Check (CRC) for TB to a transport block (hereinafter referred to as "TB") to be transmitted in uplink (130), several code blocks (hereinafter referred to as "CB") according to TB size ) And several CBs are attached with a CB CRC (131).
  • CRC Cyclic Redundancy Check
  • the channel coded data is subjected to rate matching (133), and then the combinations between the CBs are performed again (S134), and the combined CBs are CQI / PMI (Channel Quality Informat ion / Precoding Matrix Index). ) And multiplexing (135).
  • the CQI / PMI channel coding is performed separately from the data (136).
  • Channel coded CQI / PMI is multiplexed with data (135).
  • channel encoding is performed separately from the data.
  • channel encoding is performed separately from data, CQI / PMI, and RI (138). Multiplexed data, CQI / PMI, separately channel-coded RI, and ACK / NACK are channel interleaved to generate an output signal (139).
  • RE physical resource element
  • 14 is a diagram illustrating a mapping method of physical resources for uplink data and control channel transmission.
  • CQI / PMI and data are mapped onto the RE in a time-first manner.
  • the encoded ACK / NACK is a demodulation reference signal.
  • RI is mapped to the RE next to the RE where the ACK / NACK is located.
  • Resources for RI and ACK / NACK can occupy up to four SC-FDMA symbols.
  • the order of mapping is RI, CQI / PMI, data concatenation, and ACK / NACK. That is, RI is mapped first, and then concatenation of data with CQI / PMI is performed in a time-first manner.
  • the RI is mapped to the remaining REs except the mapped RE.
  • ACK / NACK is already mapped
  • Uplink control information such as data and CQI / PMI as described above (Uplink Control)
  • At least one of two transmission schemes of SC-FDMA and cluster DFTs 0FDMA on each component carrier is used for uplink transmission for each user equipment. Can be applied to
  • Uplink-MIMO Uplink-MIMO
  • 15 is a flowchart illustrating a method of efficiently multiplexing data and control channels on an uplink shared channel.
  • the user equipment has a physical uplink shared channel.
  • a rank of data of a (Physical Uplink Shared Channel; PUSCH) is recognized (S150). Then, the user equipment is uplink control channel (control channel, uplink control information such as CQI, ACK / NACK and RI) in the same rank as the tank for the data A rank of (Uplink Control Information; UCI) is set (S151). In addition, the user equipment multiplexes the data by combining the first control information, that is, the CQI.
  • the data and the control channel may be modulated to QPSK, 16QAM, 64QAM, etc. according to the MCS table (S154).
  • the modulation step may move to another position (for example, the modulation block may move before the data and control channel multiplexing step).
  • channel interleaving may be performed in units of codewords or may be performed in units of layers.
  • 16 is a block diagram illustrating a method of generating a transmission signal of data and a control channel. The position of each block can be changed in the application manner.
  • channel coding is performed for each codeword (160) and rate matching is performed according to a given MCS level and resource size (161).
  • the encoded bits may then be scrambled in a cell-specific or UE-specific or codeword-specific manner (162).
  • codeword to layer mapping is performed (163).
  • the behavior of layer shift or permutation May be included.
  • FIG. 17 is a diagram for explaining a codeword to layer mapping method.
  • the codeword to layer mapping may be performed using the rule illustrated in FIG. 17.
  • the precoding position in FIG. 17 may be different from the position of the precoding in FIG. 13.
  • Control information such as CQI, RI and ACK / NACK are channel coded according to a given condition (165).
  • the CQI, RI, and ACK / NACK may be encoded by using the same channel code for all codewords, or may be encoded by using a different channel code for each codeword.
  • the number of encoded bits may then be changed by the bit size control (166).
  • the bit size control unit may be unified with the channel coding block 165.
  • the signal output from the bit size controller is scrambled (167). At this time, scrambling may be performed cell-specifically, layer-specifically, layer-specifically, codeword-specifically or user-specifically (UE-speci fic). have
  • the bit size control unit may operate as follows.
  • the controller recognizes a tank n_rank_pusch of data for the PUSCH.
  • the encoded bits may be generated by applying channel coding and rate matching defined in an existing system (for example, LTE Rel-8).
  • bit level interleaving may be performed to further randomize each layer.
  • interleaving may be performed at the modulation symbol level.
  • Data for the CQI / PMI channel and the two codewords may be multiplexed by a data / control multiplexer (164). Then, while allowing the ACK / NACK information to be mapped to the RE around the uplink DM-RS in both slots in the subframe, the channel interleaver maps the CQI / PMI according to a time-first mapping method (168).
  • MIM0 precoding 171, RE mapping 172, and the like are performed sequentially. Then, the SC-FDMA signal is generated and transmitted through the antenna port (173).
  • the functional blocks are not limited to the position shown in FIG. 16 and may be changed in some cases.
  • the scrambling blocks 162 and 167 may be located after the channel interleaving block.
  • the codeword vs. layer map Ping block 163 may be located after channel interleaving block 168 or after modulation mapper block 169.
  • the coded CQI bits are represented by q 0 , qi, q 2 , q:, '", qQ CQI -i, and the coded data bits are represented by ⁇ , / ⁇ , ⁇ , ⁇ , .., / ⁇
  • ⁇ is a vector of CQI information in Q plausiblebits.
  • ... , / , - ⁇ is a vector of coded data in Q m bits.
  • the interleaving technique will be described.
  • the RI information is mapped to a designated RE
  • the multiplexed data and the CQI information are mapped in a time-first manner
  • ACK / NACK information is mapped to the RE around the DM-RS.
  • the output of the channel interleaver consists of a matrix of a specific size, and is referred to as an interleaver matrix for convenience of description. This will be described in more detail.
  • the input of the channel interleaver is multiplexed data and CQI information.
  • the output bit sequence of the channel interleaver has r rows and C """columns r, ⁇ -PUSCH
  • the interleaver matrix consisting of and is defined as the number of symbols assigned to the PUSCH as ⁇ symb.
  • R m ' R mu Q m ⁇
  • the interleaver matrix consists of ( ⁇ " « x ⁇ ⁇ « «) vectors, and the size of : ⁇ is in bits. In this case, the output of the channel interleaver. Bit sequence is composed by the following procedure (1) to (3).
  • RI information 02 '' '' - 1 '; »- 1 is mapped in the four columns are indicated in Table 2 below as Q m rows set unit.
  • Table 2 indicates a column index to which RI information is mapped according to a CP configuration of a corresponding subframe.
  • ColumnSet (j) means the vector indicated by Table 2
  • j means the index of the vector of Table 2.
  • ColumnSet (O) designates the first column
  • ColumnSet (2) designates the seventh column.
  • the multiplexed data and CQI information are configured in a row set unit, that is, in an interleaver matrix of size (TM> C m J) as shown in Table 4 and Table 5 below.
  • TM> C m J interleaver matrix of size
  • ⁇ fto is mapped to ⁇ rowset units, or "rowset units,” or « units, in the columns indicated in Table 6 below.
  • Table 6 indicates a column index to which ACK / NACK information is mapped according to CP setting of a corresponding subframe. However, there is a difference between RI information in that ACK / NACK information is mapped through the puncturing process.
  • the ACK / NACK information 0 ' -1 ' -2 , '" ' ⁇ — i is mapped in the reverse order from the last row, and may be configured in the interleaver matrix according to Table 7 below.
  • ACK / NACK information is mapped by puncturing in the order of the last row of index column 2, the last row of index column 9, the last row of index column 8, and the last row of column of index 3 After that, the row index is decreased to puncture ACK / NACK information according to the same column index order.
  • ColumnSet (j) denotes a vector indicated by Table 6, and j denotes an index of the vector of Table 6.
  • ColumnSet (O) indicates the second column and ColumnSet (2) indicates the eighth column.
  • an output bit sequence, or codeword is generated.
  • the channel interleaving coarse output bit sequence can be denoted by.
  • the above-described interleaving scheme of LTE Release 8 is defined assuming single layer uplink transmission when the codeword-to-layer mapping relationship is 1: 1. Uplink transmission supports multiple layers as in LTE Release 10. In this case, it is not suitable. Accordingly, the present invention proposes a CQI and data multiplexing scheme and a channel interleaving scheme to support multi-layer transmission. The present invention is applicable to a case where one codeword is mapped to two layers, but for convenience of description, it is assumed that one codeword is mapped to two layers.
  • uplink control information may be repeatedly mapped (RI and ACK / NACK) or distributed (CQI) to each layer.
  • RI and ACK / NACK may be repeatedly mapped
  • CQI distributed
  • the following multiplexing technique and interleaving technique of data and CQI information may be applied.
  • Qc CQI information of QI bit size q 0 , qi, q2,, ..., qQ CQ1 Concatenation of i and G bit size data information / ( ⁇ / , ⁇ , / ⁇ ... , / ( Multiplexed by Generates the input of the channel interleaver 0 ,: ⁇ , 2 , ⁇ , ⁇ //.
  • ⁇ ⁇ " ⁇ " ⁇ 1 and the modulation order of the ⁇ ⁇ th index codeword.
  • the output of the multiplexing scheme can be configured according to Table 8 below. [Table 8]
  • g 0 Is a vector consisting of CQI information in bits.
  • the size of the CQI bit is not a multiple of ( ⁇ ⁇ . ⁇ )
  • QPSK is 1 and 8 bits each.
  • scrambling is applied using each of the ⁇ and ⁇ different layer-specific scrambling sequences with a bit size of
  • the RI vector sequence is mapped to the layer at index 0 and the layer at index 1.
  • And 1 also indicate an ACK / NACK vector sequence mapped to the layer of index 0 and the layer of index 1 , respectively.
  • the bit size is Rl ACK.
  • the difference from the prior art is that the number of ⁇ is defined as ( ⁇ • H rQ P ⁇ / C ⁇ .
  • RI vector sequence ' 0 ,' generated in (a) and (b) is indexed in reverse order in units of new row sets, i.e., in units of columns indicated in Table 2 above. More specifically, RI vector sequence
  • each of which may be a reverse mapping performed according to the index table 10 has the size of fe ⁇ j, from the last row of the interleaver matrix by the R unit.
  • the multiplexed data and the CQI information are configured in a row set unit, that is, in an interleaver matrix having the size of [R m ⁇ C mux ) as shown in Table 11 below. More specifically, ⁇ is a row vector having a N L X Q P m] bit size, and *, which is multiplexed data and CQI information, is a column vector in bits of length Q Pm ' N l N , (Where w- ⁇ x ⁇ o. The above is mapped to an entry in the interleaver matrix that is already allocated, that is, the RI-allocated entry.) Table 11
  • the ACK / NACK vector sequence q ' K , q K , q'f K ,... generated in (a) and (b).
  • the mapping to the interleaver matrix of the system CK will be described. Similar to the RI vector sequence mapping, the ACK / NACK vector sequence q 'K'q'fCK' qx, ... ⁇ — is mapped in a row set unit, i.e., in the column indicated in Table 6 above. The entry to which t is mapped is also different from the RI information in that an ACK / NACK vector sequence is mapped through a puncturing process.
  • the ACK / NACK vector sequence is the last Mapped from row to index in reverse order, it may be configured in the interleaver matrix according to Table 12 below. For example, in a subframe to which a normal CP is applied, puncture ⁇ in the order of the last row of index column 2, the last row of index column 9, the last row of index column 8, and the last row of column 3 index ACK. / NACK maps a vector sequence. After that, reduce the row index to puncture the ACK / NACK vector according to the same column index order. Maps
  • ColumnSet (j) means the vector indicated by Table 6, and j means the index of the vector of Table 6.
  • ColumnSet (0) indicates the second column and ColumnSet (2) indicates the eighth column.
  • the number of bits of a sequence consecutively allocated to each layer is CQI
  • data is Q p m bits
  • ACK / NACK and RI are Q m k bits.
  • uplink control information mapped to a specific codeword may be allocated to the same number of resource elements in each of all layers to which the allocated control information is allocated.
  • the communication device 1800 includes a processor 1810, a memory 1820, RF modules 1830, display modules 1840, and a user interface module 1850.
  • the communication device 1800 is shown for convenience of description and some models may be omitted.
  • the communication device 1800 may further include the necessary modules.
  • some of the hairs in the communication device 1800 can be divided into more granular hairs.
  • the processor 1810 is configured to perform an operation according to the embodiment of the present invention illustrated with reference to the drawings. In detail, the detailed operation of the processor 1810 may refer to the contents described with reference to FIGS. 1 to 17.
  • the memory 1820 is connected to the processor 1810 and stores an operating system, an application, program code, data, and the like.
  • the RF modules 1830 are connected to the processor 1810 and perform a function of converting a baseband signal into a wireless signal or converting a radio signal into a baseband signal. To this end, the F modules 1830 perform analog conversion, amplification, filtering and frequency up-conversion, or their reverse processes.
  • Display modules 1840 are connected to the processor 1810 and display various information.
  • the display modules 1840 may use well-known elements such as, but not limited to, a liquid crystal display (LCD), a light emitting diode (LED), and a zero light emitting diode (0LED).
  • the user interface models 1850 are connected to the processor 1810 and can be configured with a combination of well known user interfaces such as a keypad, touch screen, and the like.
  • a base station may, in some cases, be performed by an upper node thereof. That is, a plurality of network nodes (network nodes) including a base station Obviously, various operations performed for communication with a terminal in a network may be performed by a base station or network nodes other than the base station.
  • a 'base station' may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point, and the like.
  • the term "terminal” may be replaced with terms such as UE Jser Equipment (MS), Mobile Station (MS), and Mobile Subscriber Station (MSS).
  • Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof.
  • an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), and field programmable (FPGAs). gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • processors controllers, microcontrollers, microprocessors, and the like.
  • an embodiment of the present invention may be implemented in the form of modules, procedures, functions, etc. that perform the functions or operations described above.
  • the software code may be stored in a memory unit and driven by a processor.
  • the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
  • the present invention can be applied to a wireless communication system. Specifically, the present invention can be applied to a wireless mobile communication device used for a cellar system.

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Abstract

L'invention concerne un procédé dans lequel un terminal réalise un entrelacement de canaux dans un système de communication sans fil à antennes multiples. Plus particulièrement, le procédé comprend les étapes suivantes : construction à la fois des informations d'indicateur de qualité de canal (CQI) et des informations de données codées dans des vecteurs de largeur binaire prédéfinie pour générer une première séquence de vecteurs d'entrée d'entrelaceur; répétition à la fois des informations d'indicateur de rang (RI) et des informations d'accusé de réception/accusé de réception négatif (ACK/NACK) selon le nombre (N L ) de couches de transmission pour générer une deuxième séquence de vecteurs d'entrée d'entrelaceur de vecteurs de largeur binaire prédéfinie et une troisième séquence de vecteurs d'entrée d'entrelaceur de vecteurs de largeur binaire prédéfinie; mise en corrélation de la première séquence de vecteurs d'entrée d'entrelaceur, de la deuxième séquence de vecteurs d'entrée d'entrelaceur et de la troisième séquence de vecteurs d'entrée d'entrelaceur sur une matrice d'entrelaceur, respectivement; et lecture de la matrice d'entrelaceur par colonne pour générer une séquence de vecteurs de sortie. La largeur binaire prédéfinie est définie par le produit d'un ordre de modulation (QP m) et du nombre (N L ) des couches de transmission.
PCT/KR2011/003504 2010-05-12 2011-05-12 Procédé pour réaliser un entrelacement de canaux dans un système de communication sans fil à antennes multiples, et appareil associé WO2011142601A2 (fr)

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US13/697,312 US8897247B2 (en) 2010-05-12 2011-05-12 Method for performing channel interleaving in a multi-antenna wireless communication system, and apparatus for same
EP11780818.8A EP2571178B1 (fr) 2010-05-12 2011-05-12 Procédé pour réaliser un entrelacement de canaux dans un système de communication sans fil à antennes multiples, et appareil associé
CN201180023085.XA CN102884730B (zh) 2010-05-12 2011-05-12 在多天线无线通信系统中执行信道交织的方法及其装置
MX2012013067A MX2012013067A (es) 2010-05-12 2011-05-12 Metodo para realizar intercalado de canales en un sistema de comunicacion inalambrica de varias antenas, y aparato para el mismo.
KR1020127027295A KR101356532B1 (ko) 2010-05-12 2011-05-12 다중 안테나 무선 통신 시스템에서 채널 인터리빙 수행 방법 및 이를 위한 장치
US14/523,568 US9065622B2 (en) 2010-05-12 2014-10-24 Method for performing channel interleaving in a multi-antenna wireless communication system, and apparatus for same
US14/717,873 US9325481B2 (en) 2010-05-12 2015-05-20 Method for performing channel interleaving in a multi-antenna wireless communication system, and apparatus for same

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US34990010P 2010-05-31 2010-05-31
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WO2011142601A3 (fr) 2012-03-01
CN102884730B (zh) 2015-06-03
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US8897247B2 (en) 2014-11-25
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EP2571178A2 (fr) 2013-03-20
EP2571178B1 (fr) 2020-01-15
US20150043509A1 (en) 2015-02-12
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